Stereotype platemaking machine



Jan. 2, 1951 P. TOLLISON ET AL STEREVIOTYPE PLATEMAKING MACHINE 19 Sheets-Sheet 1 Filed Dec. 29, 1944 JQQN INVENTORS ,Paull.jlllls'oiz and LazlwLl/Zcard BYMI 00W, (L M ATTORNEYS Jan. 2, 1951 P. TOLLISON ET AL 2,536,670

STEREOTYPE PLATEMAKING MACHINE Filed Dec. 29, 1944 19 Sheets-Sheet 2 3 Paul L.]llzl9oza M PM, 74AM 2 M AT Tom: EYS

Jan. 2, 1951 P. 1.. TOLLISON ET AL STEREOTYPE PLATEMAKING MACHINE 19 Sheets-Sheet 3 Filed Dec. 29, 1944 INVENTORS PM L. Telll'dzz and 6W5 Liam/0f; M VFW M' a M ATTORNEYS 19 Sheets-Sheet 4 7 L 2 MW 02 W w m P. L. TOLLISON ET AL STEREOTYPE PLATEMAKING MACHINE mg M M P W M 4 "M Filed Dec. 29, 1944 Jan. 2, 1951 ATTORNEYS Jan- 2, 1951 P. L. TOLLlSON ET AL 2,536,670

STEREOTYPE PLATEMAKING MACHINE Filed Dec. 29, 1944 19 Sheets-Sheet 5 I I 0 Z .97 S .29 g 9.9 5 89 a; w I v 90 14 22 INVENTORS Jan. 2, 1951 19 Sheets-Sheet 6 Filed Dec. 29, 1944 WM 0 J M Jan. 2, 1951 P. L. TOLLlSON ET AL STEREOTYPE PLATEMAKING MACHINE l9 Sheets-Sheet 7 Filed Dec. 29, 1944 Jan- 2, 1951 P. L. TOLLISON ET AL 36,670

STEREOTYPE PLATEMAKING MACHINE Jan. 2, 1951 P. L. TOLLISON ET AL STEREOTYPE PLATEMAKING MACHINE l9 Sheets-Sheet 10 Filed Dec. 29, 1944 M M M ATTCFZNEYS Jan. 2, 1951 P. L. TOLLISON ET AL STEREOTYPE PLATEMAKING MACHINE l9 Sheets-Sheet 11 Filed Dec. 29, 1944 INVENTORS PML.]'0Z7L'$0M ATTO R N EYS a 1951 P.IL. TOLLISON ET AL 2,536,670

STEREOTYPE PLATEMAKING MACHINE Filed Dec. 29, 1944 19 Sheets-Sheet 12 BY (YM W, 44% W ATTCIRNEYS Jan. 2, 1951 P. TOLLISON ET AL 2,536,670

STEREOTYPE PLATEMAKING MACHINE Filed Dec. 29, 1944 19 Sheets-Sheet 13 INVENTORS Paid '13. f'fljlzlsall and fli/fiLLEZZWId; BY M, PM, W 2 M ATTORNEYS Jan. 2, 1951 P. L. TOLLISON ET AL STEREOTYPE PLATEMAKING MACHINE l9 Sheets-Sheet 14 Filed Dec. 29, 1944 a A N..

Pauli. jblla's'oiz ma mwLmm/w $314 6M am, AM 4 M Jan. 2, 1951 P. TOLLISON ET AL STEREOTYPE PLATEMAKING MACHINE l9 Sheets$heet 15 Filed Dec. 29, 1944 WW1 w ZM zfm Jan. 2, 1951 P. L. TOLLISON ET AL STEREOTYPE PLATEMAKING MACHINE l9 Sheets-Sheet 16 Filed Dec. 29, 1944 INVENTORs Z94 P421115. Y/llls'nii mad Z91 lmzksj.fliaardy Pavia M L M ATTORNEYS P. 1.. TOLLISON ET AL STEREOTYPE PLATEMAKING MACHINE' 19 Sheets-Sheet 19 Jan. 2, 1951 Filed Dec. 29, 1944 grwmvto od Tall/Q9012 dim! /idrlasl. EZZAWWI? WM. w. M L M Patented Jan. 2, 1951 2,536,670 STEREOTYPE PLATEMAKING MACHINE Paul L. Tollison, 'North Plainfield, and Charles L. Ricards, South Fla-infield, N. J., assignors to Wood Newspaper Machinery Corporation, Plainfield, N. .L, a corporation of Virginia Application December 29, 1944, Serial No. 570,324

This invention relates to an improved machine for making stereotype plates and more. particularly concerns a unitary machine of this nature for successively casting, finishing, cooling, and delivering stereotype plates.

Stereotype plates for use in printing newspapers and the like are made by casting molten metal in a mold against an impression formed on a-stereotype matrix, which is also known as a fiong or mat. The cast plate is then finished by trimming the curved edges thereof and shaving the interior concave surf ace-to the proper curvature. Thereafter, the finished plate is suitably cooled.

Machines of this nature in present use required either the manual transfer of the cast plate from the casting unit to the finishing unit or from the finishing unit to the cooling unit or the manual stripping of the mat from the cast plate and'the subsequent replacement of the mat in the casting unit after each cast. Various oth er operations incident to casting and finishing the stereotype plates are also often performed manually or are subject to improper operation or failure in the hands of unskilled or inattentive operators.

"In accordance with the present invention, an

improved and unitary machine is provided for 1 rapidly and successively casting, finishing, and cooling stereotype plates in a series of operations, substantially all of which are automatically initiated and completed. The machine of the invention includes (1) a manually operated, vertically disposed casting unit comprising a casting box and a core, the casting unit being operable for release of the cast plate therefrom and the core being tiltable to an inclined position for delivery of the cast plate to the finishing unit, the casting unit also including means for automatically stripping the cast plate from the mat coincidentally with the release of such plate, (2) a finishing unit including means for automatically clamping the cast plate in position for finishing, means for automatically severing the tail from the plate, means for automatically shaving the concave surface of the plate, and means for.

automatically releasing the finished plate for delivery to the cooling unit, and (3) a cooling unit for causing a cooling fluid to come into contact with the finished plate to cool it to the desired temperature, the finishing unit and the cooling unit together including an inclined runway down which the cast plate can slide by gravity.

Particular objects of the present invention include the provision of means to prevent move.-,

7 Claims. (Cl. 29-21) ment of the casting box while the core is in its tilted, inclined position, self-operating means for. retarding the movement of the plate down the inclined runway into the finishing unit and the ,cooling unit, means for automatically trimming or beveling both ends of the cast plate while it is clamped in the finishing unit and for trimming successive plates to the same length, automatically operated means for lifting the severed tail off the inclined runway before the finished plate is released from the finishing unit and for laterally ejecting such tail from the machine,

means initiated by the tilting of the core back to its vertical position for setting into operation the several automatically operated elements of the finishing unit, and means operable by the movement of the finished plate into the cooling unit for holding the plate therein for a predetermined period and for causing a predetermined amount of cooling fluid to flow into contact with the plate while it is held in the cooling unit.

Other specific objects, advantages, and characteristic features of the invention will be apparent from the following description of a preferred embodiment thereof taken in connection with the accompanying drawings, of which: I

Figure l is an elevation showing a general outline of the entire stereotype plate-making machine;

Figs. 2, 2A, and 2B are enlarged sectional elevations taken substantially along the center line of the machine and showing the casting unit, the

finishing unit, and the cooling unit, respectively, with certain parts omitted from Figs. 2A and 2B,

from the right-hand end to the lefthand end of the machine as viewed in Fig. 1, Fig. 2 showing the core and the casting box in their vertical, closed position and also showing (in dot and dash lines) the core in its tilted position and the cast plate ready for delivery to the finishing unit,

Fig. ZA showing (in dot and dash lines) the cast plate clamped in position in the finishing'unit,

and the severed tail in position for removal, and

Fig. 2B showing (in dot and dash lines) the finished plate in position in the cooling unit;

Fig. 3 is an enlarged elevation of the casting unit as shown in Fig. l, with parts in section and with certain parts omitted, and shows the core and the casting box locked in position to receive molten metal for casting a plate;

Fig. i is a plan view, with parts in section and with certain parts omitted, of the casting unit as shown in Fig. 3; 

